Explore GIA’s collection of free, rare digital books and manuscripts that document the history of gems and jewellery.
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Arizona’s scenic desert and mountain landscape is the perfect backdrop for a modern Wild West road trip in search of gem and mineral treasures.
Read MoreMillions of carats of turquoise have been enhanced by a proprietary process called the Zachery treatment.
Read MoreChinese gem-quality turquoise is sky blue, greenish blue or bluish green in colour.
Read MoreChina has identified many deposits with significant potential to produce gemstones; various species are discussed.
Read MoreTurquoise is one of the world’s most ancient gems. Archaeological excavations revealed that the rulers of ancient Egypt adorned themselves with turquoise jewellery, and Chinese artisans were carving it more than 3,000 years ago.
Read MoreThis article, from the Winter 1991 issue of Gems & Gemmology, is a compilation of abstracts of important gemmology-related articles published outside of Gems & Gemmology.
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